with a b : The open interval is defined as the set
( a . b] ! {x : a e x e b}
16
. b) ! { x : a
x b}
The closed interval is defined as the set
[a.Real Number Intervals
For any two different real numbers. a and b.

called an exponential equation. then x ! y .
x y x
** If a " 0 . a { 1 . and x ! y . then a ! a . and a ! a . Property :
** I a " 0 .Exponential Equation
An equation with a variable in the exponent.
y
Note : Both bases must be the same!!
22
. a { 1 .